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    Öğe
    A new species of Pseudorientalia (Gastropoda: Hydrobiidae) from midwestern Türkiye with notes on Pseudorientalia natolica (Küster, 1853)
    (Magnolia Press, 2024) Odabasi, Deniz Anil; Mercan, Deniz; Odabasi, Serpil; Arslan, Naime
    The members of the genus Pseudorientalia Radoman, 1983 are small hydrobiid species with characteristic features of the penis and female genitalia. The type locality of the genus is the southern Marmara region, northwestern T & uuml;rkiye. In this study, sampling was carried out in the upper Sakarya River Basin, western -middle Anatolia to obtain hydrobiid specimens, which yielded a new Pseudorientalia . The shell, penis, and female genitalia of the new species are described. The measurement of some shell characters is compared with the other representatives of the genus from T & uuml;rkiye, northern Greece, and some Aegean islands: Samos, Chios and Lesvos. In addition, notes on Pseudorientalia natolica are also given from examination of the type specimens.
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    Öğe
    Aras Nehri havzasındaki (Kuzeydoğu Türkiye) üç gölün (Çıldır, Aktaş ve Aygır) makrozoobentik fauna yapısının ilk değerlendirmesi
    (2022) Mercan, Deniz; Arslan, Naime; Elipek, Belgin Çamur; Ertorun, Nesıl; Odabaşı, Deniz Anıl
    Çıldır, Aktaş ve Aygır göllerinin makrozoobentik fauna yapısının ortaya konması amacıyla 2013, 2017 ve 2019 yıllarında farklı dönemlerde göllerde yapılan örneklemeler sonucunda 47 takson tespit edilmiştir. Tür düzeyinde teşhisi yapılan 43 taksondan 41 tanesi araştırma yapılan göller için yeni kayıt niteliğindedir. Çıldır Gölü’nün dominant türleri Gyraulus (Armiger) crista (% 4.49), Paratanytarsus lauterborni (% 3.90) ve Virgotanytarsus arduensis (% 3.80) olarak tespit dilmiştir. Aktaş Gölü zoobentozunda gammarid populasyonunun çok baskın olduğu görülmektedir. Gölde Gammarus pseudosyriacus %15.24 baskınlık oranı ile dominant tür iken bunu % 7.53 oran ile Cricotopus (Isocladius) reversus ve % 7.29 oran ile Gyraulus albus takip etmektedir. Aygır Gölü’nde de gammarid populasyonu yüksektir ancak Aktaş Gölü’nden farklı olarak bu gruptan Gammarus balcanicus % 6.28’lik baskınlık oranı ile; Gyraulus albus (% 8), Virgotanytarsus arduensis (% 6.92) ve Cricotopus (Isocladius) tricinctus’tan (% 6.64) sonra dördüncü sırada yer almaktadır. Makrozoobentik fauna çeşitliliği açısından en yüksek Shannon ve Margalef İndeks değerleri Çıldır Gölü’nde tespit edilmiş olup (Shannon İndeks H’: 1.73-2.23 arasında (ortalama 2.0), Margalef İndeks: 1.89-2.06 arsında (ortalama 2.03)) Aktaş ve Aygır göllerinde ise daha düşüktür. Her üç göl genelinde de tespit edilen taksonlar ? ve ? mesosaprob su kalitesi sınıfına ait türler olup, populasyon yoğunluklarının fazla olması özellikle Çıldır Gölü için oligotrofik düzeyden mesotrofik düzeye geçişin bir işareti olarak değerlendirilebilir.
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    Öğe
    The Non-indigenous and Ponto-Caspian Gastropoda Fauna of Lake Sapanca (Turkey), with Notes on the Ponto-Caspian Clitellata Species in the Lake
    (Inst Zoology, Bas, 2017) Arslan, Naime; Akkan-Kokcu, Cansev; Mercan, Deniz; Odabasi, Deniz Anil
    Many Ponto-Caspian invertebrate species have been introduced to new areas in Europe, Baltic Sea and North America. In Turkey, the Ponto-Caspian fauna has spread in the inland waters, following different patterns and in different geological periods. Lake Sapanca is located on a tectonic hole in the Marmara region in the north-western part of Turkey. Except for a few studies, there has been no detailed information about the non-indigenous and Ponto-Caspian species in the lake. In the present study (from June 2011 to December 2013), the benthic macroinvertebrate fauna of Lake Sapanca was determined. The following Gastropoda species, which originate from the Ponto-Caspian area, were detected: Lithoglyphus naticoides, Esperiana esperi, and Borysthenia naticina. The presence of these species in different parts of Turkey suggests that the main routes of migration might be the rivers flowing into the Black Sea. Some notes on the Ponto-Caspian and invasive Clitellata species in the lake were made.
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    Öğe
    The use of BMWP and ASPT indices for evaluation of water quality according to macroinvertebrates in Kucuk Menderes River (Turkey)
    (Springer, 2016) Arslan, Naime; Salur, Ali; Kalyoncu, Hasan; Mercan, Deniz; Barisik, Burcu; Odabasi, Deniz A.
    This study was carried out in the Kucuk Menderes River basin in order to determine the water quality and investigate the environmental quality and the applicability of both the Biological Monitoring Working Party (BMWP) and Average Score Per Taxon (ASPT). Monitoring took place in May, July and September 2014 at 10 stations (7 rivers and 3 lakes) according to the method of Intercalibration Common Metrics. Some metrics (BMWP, ASPT, Family Biotic Index, Simpson Diversity Index, Shannon-Wiener Diversity Index, Margalef Diversity Index, dominance, frequency and existence of sensitive species) were calculated. In total, 69 taxa comprising 5,814 individuals were detected. The taxa having the highest frequency rate were Limnodrilus hoffmeisteri (70%), Chironomus (Camptochironomus) tentans (70%), Psammoryctides albicola (60%), Physella acuta (60%), Nais elinguis (60%) and Stylaria lacustris (50%), which are alpha mesosaprobic and polysaprobic species, respectively. The presence and high dominance and frequency rate of these species have indicated basin pollution. Positive indicator species for water quality are Gomphus schneideri, Trithemis annulata, Lindenia tetraphylla, Orthetrum cancellatum, Hydropsyche angustipennis, Cricotopus (Cricotopus) fuscus and Cricotopus (Cricotopus) annulator, while negative indicator species are Culex pipiens, Chironomus (Camptoch.) tentans, Chironomus thummi, Stylaria lacustris and Eristalis tenax. Habitat quality of the Kucuk Menderes River basin was not high (it was found to be heavily polluted/polluted/slightly polluted according to the physicochemical data, BMWP and ASPT) due to physical habitat degradation, urban waste waters, touristic, seasonal dwelling and agricultural activities.